Solar window construction and methods

ABSTRACT

Disclosed are novel forms of operable windows capable of producing an electrical current utilizing a transparent or semi-transparent solar collecting substrate. A scaffold assembly is utilized to enclose the perimeter of the substrate and one or more solar cells. The scaffold may comprise a scaffold port providing passage for an exit conductor from a sash lead in electrical communication with a solar cell. The assembly may include a bridge portion of an exit conductor that carries electrical current from a sash portion to a frame portion of the window assembly. A frame port extending through the frame of the window may provide passage of the exit conductor to electronic accessories or to circuits that can store or reuse the electrical energy produced. Various forms of electronic accessories are disclosed for fixed or releasable mounting to portions of the window.

This application is a U.S. non-provisional patent application and claimsbenefit of priority of U.S. Provisional Patent Application No.62/265,373 filed Dec. 9, 2015.

BACKGROUND OF THE INVENTION

Field of the Invention

The invention relates generally to transparent and semi-transparentsolar collecting windows, and more particularly to the apparatus andmethods of construction of transparent and semi-transparent solarcollecting windows and accessories and methods of integrating and use ofthese accessories with solar collecting windows.

Background Description

As the concern of increasing amounts of greenhouse gases elevates, theworld is looking for practical solutions for creating new greener formsof energy. Much has been said in the media about advances in the newertechnologies such as electric cars, wind farms, improved batteries, andnow solar collectors.

Traditional solar collectors are opaque thereby making theminappropriate for use as a glass replacement in windows. New transparentand semi-transparent (referred herein as simply ‘transparent’) solarcollectors are by their nature clear and encouraging for use as a glassreplacement in windows. The challenges of delicate electronicintegration aside, substituting transparent solar collectors in theplace of traditional glass in windows is desirable for at least thepurpose of cleanly generating electricity without substantial change tothe aesthetics of a building, home, or other structure. Enclosing homesand buildings with these solar collectors gives hope to the possibilityof making these structures free of the need of external energy sources.

There are many different types of windows available to consumers today.Stationary, also known as fixed windows, are windows that generally havea frame but do not open to provide for the transfer of air nor allow theescape through the window in an emergency. These windows are alsoreferred to as non-opening and alternatively non-operational windows.Opening windows, also known as operational windows, are windows having aportion of the window that does open to allow the passage of air, heator cold, or for the escape of humans and other animals or for therelease of toxic fumes or odors. Examples of these types of windowsinclude casement, sliding, hung, and awning windows.

Integrating the transparent solar collectors into window systems,however, is not simply a matter of swapping traditional window glasswith a transparent solar collector. This is particularly true for theoperational variety of windows that open and close. These windows mustnot only open and close, they are typically expected to perform manyother functions. For example, performance requirements of opening orfixed windows may include; being energy efficient, closing tightly,locking securely, opening and closing easily, resisting the naturalelements, easy installation, easy to repair, easy to clean, reliable,durable, aesthetically appealing, fitting within a prescribed space in awall, and inexpensive to manufacture. Over time window manufacturershave efficiently improved the design of traditional non-solar collectingwindows as well as the manufacturing techniques. However, new techniquesand designs are needed for mounting of the transparent solar collectorwithin the sash and window frame of a home or other building in order tomaintain continued performance and to route collected energy.

Many of the challenges of operational windows with integrated solarcollectors are now considered. Unlike traditional glass, sometransparent solar collectors include solar cell strips around theperiphery of the glass or polymer sheet used as part of the collector.This edge may be wider and delicate and should be considered in the sashdesign to prevent damage to the collector. Novel methods of routing andconnecting and disconnecting conductors traveling between the collectorsor solar cells within the sash to a solar system circuit located withinor outside the window frame are needed for the transference ofelectrical current from the solar collector. Novel conductors andmethods of conducting current are needed that will withstand therepetitive opening and closing of slider, hung, casement, tilts andother types windows without destructive pinching of the conductorsbetween portions of the sash or window frame or fracture of theconductors due to fatigue failure or other stresses placed on them. Theconductors should be integrated into the window system without theintroduction of features that will cause a loss of energy such as theleakage or heat or cold. The conductor should be easily released so thatthe sash may be removed for repair or cleaning without concern of damageto the conductors, solar cell or collector, or pulling of the conductoraway from terminals on the collector or solar cell or elsewhere in thewindow system. The conductors, connection terminals, and conductorrelease mechanism should be hidden from view during normal operation ofthe window. The conductors and connectors should be designed to avoiddamage due to water, ice, or other elements. The conductors should beconfigured to easily connect within a solar system of a home or buildingso as to minimize assembly during installation.

Similarly, conductor circuits and associated hardware are needed for thetransfer of electrical energy collected from a transparent solarcollector to power electrical connectors disposed on a portion of thewindow sash or window frame for powering or charging external electronicdevices. In addition, conductor circuits and methods of storing powerwithin a window sash or frame are needed as a convenient means to poweror charge external electronic devices in instances when there isinsufficient light to power the solar cell or collector. Novel uses oftransparent solar windows need to be explored that provide convenientand functional options for accessories.

SUMMARY OF THE INVENTION

Disclosed herein are several forms of transparent and semi-transparentsolar collectors mounted within window scaffoldings or directly withinwindow frames.

Defining various parts of a window assembly is helpful for describingand illustrating various aspects of the article of invention.

Argon—An inert, nontoxic gas used in insulating glass units to reduceheat transfer.

Balance—A mechanical device (normally weighted or spring-loaded) used insingle—and double-hung windows as a means of counterbalancing the weightof the sash during opening and closing.

Casing—Exposed molding or framing around a window or door, on either theinside or outside, to cover the space between the window frame or jamband the wall.

Casement—A window attached to its frame by one or more hinges pivotingabout an axis. Often the pivot point is not fixed. In most cases theaxis is vertical. In other forms of casements, windows hinged at the topare referred to as awning windows whereas those hinged at the bottom arecalled hoppers.

Check rail—The bottom horizontal member of the upper sash and the tophorizontal member of the lower sash which meet at the middle of adouble-hung window.

Clad—A rigid protective layer covering exterior wood parts of a window.In most cases this rigid protective layer is extruded aluminum eitheranodized or with a factory-applied finish to deter the elements.

Frame—The assembled combination of a head, jambs, and sill that forms aprecise opening in which a window sash fits.

Glass—A framed sheet of glass often used within a non-energy producingwindow frame.

Glaze—Refers to the assembly of a single or multi-pane substrate andassociated parts that is seated within the stiles and rails of a sash.Single-glazed refers to a single layer of glass or substrate and istypically the most energy inefficient. Double-glazed refers to two panesof glass or substrate with an intermediate spacer typically with anairtight seal around the periphery of the window pane. The air in thesealed space between the panes of glass is typically substituted with aninert gas such as Argon which has a lower thermal conductivity than airand thus a better insulator. A desiccant may be used in the spacer toabsorb moisture. Triple-glazed is similar to double glazed but includesa spaced third pane of substrate to further boost insulation properties.

Grilles—Any bar that divides window glass into smaller panes. Alsocalled a muntin, grid or windowpane divider. The grilles may be placedinternal to two opposing panes or over an outside surface of a glaze.

Head—The main horizontal part forming the top of the window frame.

Hung windows—Windows wherein one (single hung) or both (double hung)sash are operable typically by sliding vertically. In most cases,operable sashes tilt for easy cleaning.

Jamb—The main vertical structural parts forming the sides of a windowframe.

Lift-Handle—A handle for raising the lower sash in a double-hung window.Also called sash lift.

Lock handle—A locking mechanism located on the handle of a window.

Low-E—A coating on a substrate to minimize the amount of ultraviolet andinfrared light that can pass through the substrate without significantcompromise of the amount of visible light that is transmitted. Thiscoating improves the efficiency of the substrate by reflecting heat yetletting light in.

Mullion—A major structural vertical or horizontal member to combine twoor more windows together.

Operable—A sash that opens typically by sliding within the frame orpivoting on hinges with respect to the frame.

Operator-Crank—An operated device for opening and closing casementwindows.

Pane—A single sheet of a substrate.

Spacer—A material placed between panes having a thickness that keeps thepanes a fixed distance apart creating an air space therebetween.

Rabbet—A recess within a portion of the scaffold assembly for seatingthe glaze. The rabbet may include an adjunct recess to help house one ormore of; the solar cell, conductor and additional solar parts. In someforms, the rabbet may be in the form of a wall facing the substrate.

Rail—Horizontal member of a window sash on a slider, double-hung orsingle-hung window.

Sash'A scaffold assembly with a glaze held therein. In a solar windowthe sash includes the solar cell and associated components.

Scaffold assembly (scaffolding)—An assembly of stiles and rails arrangedto receive a glaze.

Sill—The main horizontal part forming the bottom of the frame of awindow.

Sliding window—Windows that open by sliding horizontally.

Solar circuit—A term for the terminals and conductors responsible forproviding a conduit for the electrical current produced by the solarcell to be carried to a useable destination.

Solar collector—A light collecting panel and cooperating solar cellwhich produces an electric current in the presence of a pre-determinedlight wavelength.

Solar terminal—Positive and negative points of connection on the solarcell.

Stile—The vertical support portions of a sash.

Substrate—The transparent or semi-transparent material used in a solarcollector on which a solar coating or solar cell is formed. Commonly inthe form of a glass or polymer.

Tabbing ribbon—A conductor for photovoltaic modules typically made of acopper ribbon or flat wire that is coated in solder.

The use of the descriptors transparent or semi-transparent willcollectively be referred herein simply as ‘transparent’. Transparentsolar collectors have a special quality of being able to produce anelectric current for the benefit of the user though the collection ofsurrounding ambient light and sunlight. The transparent solar collectoris utilized as a replacement for common non-energy producing glass inwindows such as used widely in homes, offices, and other buildings. Theglaze is typically square or rectangular for operational windows but maybe formed in a wide variety of other shapes. Fixed windows are also mostcommonly square or rectangular. Fixed windows in shapes other thansquare or rectangular may be manufactured with reduced complexity sincethey are not required to open. The glaze is manufactured from one ormore panes of a transparent flat substrate. The transparent substratemay be in the form of glass, a polymer, or other similarly performingmaterial.

Various forms of the transparent solar collector portion of the glazemay be used for the generation of electrical energy and may be found inthe prior art. For example, in one form of transparent solar collectorthe energy producing glaze is created using thin layers of liquidcoating on a pane to produce ultra-small solar cells in array groups.The coating materials are organic polymers dissolved into liquid form.When applied to the pane, modules appear with a neutral tint. In thisform the solar cells and arrays are created on the substrate to form thesolar collector. In another form, thin-film solar cells are printedusing perovskites on glass or similar substrates in a multi-junctionarchitecture.

As an example of another form of transparent solar collector of theprior art, the energy producing glaze utilizes a pane covered with aspecialized light responsive coating. The coating is primarily acomposition of organic salts that absorb wavelengths of infrared andultraviolet light that are invisible to the human eye. In some forms,the organic salts are blends of cyanine and cyanine salts. This light istrapped within the coating and transformed to glowing infrared lightthat is guided to the edge of the glass or polymer where the light iscollected by solar cell strips adjacent the edge of the substrate thatproduce an electrical current.

In some embodiments, a glaze utilizing s collector having edge placedsolar cells may include one or more of the following features in single,double, or triple glaze configurations. In one form, a light responsivecoating is applied one or more sides of the transparent substrate. Inpreferred embodiments a solar cell strip is roughly the width of orwider than the thickness of the pane and is secured generally parallelalong one or more edges of the substrate and coating using a cellfixator. In embodiments utilizing more than one pane of glass, the solarcell may extend in width to collect light from a plurality of substrateedges. Alternatively, thin solar cell strips may used to collect lightfrom individual panes. A light responsive side of a solar cell ispositioned so as to capture the glowing infrared light guided to theedge of the substrate through the light responsive coating. Whenpresent, a cell fixator holds a solar cell in an optimal position tocollect emitted light from a peripheral edge of a substrate and coating.In some forms a cell fixator may include a cell sealant for blocking outmoisture from reaching the cell, and a cell shield to help preventdamage to the solar cell, or both. In some forms, a cell fixator, cellsealant, and cell shield are separate entities. In some forms a cellfixator may be in the form of an adhesive or adhesive sealant. In otherexamples, a cell fixator may be in the form of a plastic clip engagingboth the solar cell and substrate. In some forms this plastic clip mayserve as a cell shield.

In one form, a cell fixator is in the form of a tape spanning from aportion of the solar cell to the substrate. In some forms the tape maysubstantially or fully enclose the solar cell to the substrate to alsoserve as a cell sealant. The cell sealant serves to minimize moistureand other contaminants from contacting the solar cell. Other examples ofcell sealants include various caulks such as silicone to seal at edgesof the rail or stile where moisture might seep into a rabbet area oradjunct recess where a solar cell is located. In some forms a rail orstile will include a curved-in edge or weather strip as an additional oralternative method of sealing out moisture and other elements fromreaching the inside of the rabbet. If present, a cell shield assists inprotection of a solar cell and the associated conductors from damageparticularly during assembly of the sash. For example, the cell shieldmay be in the form of a foam tape placed over the solar cell forprotection during installation. The tape may alternatively be of a foampadded variety wherein it protects, seals, and positions the solar cellin an optimal position for collecting light. In some forms the solarcell may be enclosed in a reflective tape or reflective sock wherein anystray light not initially captured by the solar cell will be reflectedback towards the solar cell.

In preferred forms, the solar cells are placed at all edges of thesubstrate for collection of light. In other forms, solar cells areplaced adjacent one or more edges, but not all, to produce windows ofvarious solar collecting efficiencies and cost. In some forms, mirroredsurfaces may be placed adjacent the free edges of the substrate inattempt to reflect some of the collectible light back to one of thesolar cells placed on another edge. A mirrored surface may include forexample a polished aluminum plate or foil placed adjacent the open edgeor a mirrored coating formed on the edge. Other examples include amirrored tape enclosing the substrate edge.

In multi-pane configurations, panes are preferably spaced in dual paneand triple pane embodiments using a pane spacer placed about theperiphery between the inner faces of the opposing panes. The pane spaceris configured to avoid harm to light responsive coatings or layersapplied to the substrate surface. For example, the spacer substrateengaging surface may be smooth and broad whereas in other embodimentsthe surface may include narrow elongated ribs that may penetrate thecoating but leave vast swaths of the coating untouched. In someembodiments a pane spacer is in the form of an elongated strip withpre-positioned shaper notches used to configure the spacer into apredetermined outer shape of the substrate profile. In some embodimentsthe spacer is in the form individual strips, U-shaped struts, blocks,tubes, or other shape sufficient for maintaining a space between theopposing substrates. The spacer may be configured to seat a grille ormuntin in between the panes of substrate. In some forms the spacer isaluminum and preferably rigid. In other forms the spacer may be formedof materials having a lower coefficient of thermal conductivity such asa polymer.

In some forms a spacer includes a desiccant for the absorption ofmoisture. A primary sealer may be used to create an enclosed innervolume between the panes of substrate. Once sealed, the air within theinner volume may be replaced with an inert gas such as argon to improveenergy efficiency. The primary sealer is applied circumferentially aboutthe panes and spacer between the opposing substrate faces. A secondarysealer may be used to seal between one of the opposing faces of thesubstrate and spacer. The edge of the substrate is open for gathering oflight by the solar cell.

In some embodiments a rabbet of a stile or rail comprises one or moreadditional adjunct recess if needed for housing one or more of a solarcell or associated parts such as a cell fixator, a cell sealant, a cellshield, and solar cell conductors. In some forms, one or more celladjunct arms are included within the rabbet of a rail or stile to assistpositioning or holding of one or more of a solar cell and associatedconductors. In preferred embodiments adjunct arms are shaped to cradleor otherwise serve as positioning guides for the one or more solar celland conductors.

Each solar cell or array of cells includes a positive and negative solarterminal for the electrical transmission of current produced by thecell. In some embodiments, these solar terminals are located on asurface of the substrate or off the substrate such as on the surface ofa solar cell located adjacent the edge of the substrate.

An exit conductor serves as an electrical conduit for transmission ofcurrent generated by the solar cells on the sash to a destination at awindow frame where the solar energy can be utilized or furthertransferred to a final destination. An exit conductor may beelectrically joined to the solar terminals directly. However, due to thefragile nature of the solar cells, tabbing wire may extend from a solarterminal to a nearby grid terminal where it is joined with an exitconductor. An exit conductor may be joined to terminals and otherelectrical components in the solar circuit using any variety of joiners.Some examples of joiners include soldering often with the use of tabbingwire, resilient or spring biased clips, snaps, clamps, fasteners,adhesives, crimping, male-female couplers, and frictional fit such as acontact interference. Many of these connectors provide for rapidconnection to end or intermediate terminals. For example, correspondingmale and female spade connectors may be used for quick connect anddisconnect. In other examples, a ring style end connector may be usedfor clamping to a threaded screw post or by a screw. In some embodimentshaving a plurality of solar cells, an exit conductor comprising both apositive and a negative conductor may travel from one solar cell or cellarray to another to electrically join them in one or more of a seriesand parallel configuration. An exit conductor or portions of it may bepre-formed in pre-determined lengths and bent in shapes that willfacilitate rapid assembly of a glaze within a sash or within a sashwithin a window frame. Various forms of clamps may be used to secure anexit conductor within a port. For example the exit conductor may extendthrough a compression grommet or secured with adhesives or fasteners.

Exit conductors extending from solar terminals transmit current from asolar cell to various transmission points such as one or more of; asolar system within a building, an electrical circuit, an outlet locatedinside or outside the window frame, an inverter, and other pointscapable of making use of the energy supplied.

An exit conductor includes a sash lead at an end nearest the solar cell,and a functional lead at an opposite end. Along its length, an exitconductor may be in the form of a single continuous conductor portion ormay comprise one or more of unbroken and electrically joined brokensegment portions configured to perform pre-determined functions.Although not required, in preferred embodiments an exit conductor andintermediate electrical connectors may be insulated, weatherproofed, orboth. Broken segment portions may be joined and accessory circuits mayoffshoot from various junction devices using a joiner as introducedabove. Joiners are preferably quick release in areas of disassembly suchas for removal of the sash from the frame or when replacing a solarcollector within a sash. In some forms, continuous conductor portionsthough unbroken may include pass-though joiners for the option toelectrically connect to a conductor without the need for it to besevered.

An exit conductor may be identified in portions relative to where itresides within a window assembly. Some embodiments of solar windows donot require all portions. Beginning at the sash lead, the portion of anexit conductor housed within a sash rail or stile is a sash portion. Theportion of an exit conductor residing between a sash and a window frameis a bridge portion. The portion of an exit conductor residing within awindow frame is the frame portion. Final portions of an exit conductorafter exiting the frame portion is an extension portion.

In preferred embodiments an exit conductor further comprises a negativeand a positive exit conductor portion. Each negative and positive exitconductor portion is electrically coupled to a respective positive andnegative solar terminal. The configuration of an exit conductor may varyprimarily depending on the particular challenges of the window system inwhich it is used and on the performance expected. In some embodiments,the same type of conductor may be used throughout an entire exitconductor. In other embodiments various portions of an exit conductormay comprise different types of conductor materials and configurations.For example, an exit conductor may be in the form of a mono-filament ormulti-filament wire throughout its length. This type of conductor canwork well for a fixed window system where no movement is requiredbetween a sash portion and frame portion of a window. This includes somefixed window embodiments where a glaze may be mounted directly in awindow frame without a scaffold assembly. However, although it may beused, mono-filament and multi-filament wire may not perform sufficientlylong term in areas such as fatigue strength in operable windows inportions of a window where a sash is repeatedly opened and closed. Inoperable windows, substantial motion in an exit conductor occurs in abridge portion whereas other portions of an operable window such as thesash and frame portions generally encounter very little movement. Again,to meet these varying demands, portions of an exit conductor may bemanufactured differently or the same. For example, in one embodiment anexit conductor's sash and frame portions are comprised of an elongatewire while the bridge portion comprises a conductor that ischaracteristically more flexible while having a substantial fatiguelife. In addition, closing of a sash is often characterized by a tightfit between a sash and frame of a window. In some embodiments thin flatconductors are utilized providing less interference at the closureinterface between a sash and frame.

In one embodiment, a bridge portion or other portions of an exitconductor are in the form of a flexible bus bar or braided wire or superelastic conducting metals such as nitinol. In another embodiment thebridge portion is in the form of a conductor on a flexible sheet such asa printed circuit board (PCB). The PCB is preferably flexible orsemi-flexible. A flexible sheet may be single sided (conductor only onone side) or multi-layer often having a thickness generally between50-800 microns. A conductor joined to the flexible sheet is generally9-35 microns thick and manufactured of a conductive material such ascopper. A flexible sheet in preferred embodiments is typically based onpolyimide (PI), however many other suitable substrates may be used,examples including PET (polyethylene terephthalate) and PEN(polyethylene naphthalate). A PCB may assume a bent, twisted, accordion,folded, or other configuration helpful for assuming a compact profilebut also an extended or elongated profile as the sash moves. In someembodiments, flexible sheet conductors are used for more than a bridgeportion of an exit conductor. Their thin profile and capacity formanufacturing in predetermined shapes and sizes eases assembly. Inaddition, cover layers may be used as a protective insulating barrier ifdesired. Access holes in a flexible sheet can expose terminal leads forconnecting to other components or terminals generally using small screwsextending therethrough, spring clips or other joiner. In someembodiments a flexible sheet may be secured by adhesion and othermechanical methods to the stile or rail. For example, adhesion such astwo-way tape may be used or an adhesive layer may be formed directly onone side of the flexible sheet or both. In some embodiments, an adhesiveprotection layer may be peeled off to expose the adhesive layer on theflexible sheet. In other embodiments, the flexible sheet may be securedby mechanical methods such as one or more of snaps, deflectable posts,and cradling arms.

In some embodiments electrically functional electronic or optical inksor both are used for deposit on a substrate creating one or more activeand passive devices such as thin film transistors, capacitors, coils,and resistors. These elements may be utilized to create circuits toassist with controlling or regulating or both the output of the solarcell for predetermined functional purposes. In some embodiments,portions of an exit conductor may be formed within a portion of or upona surface portion of a scaffold assembly or both. For example, aconductor may be printed on a surface of a rabbet as a substitute forseparated conductor components such as wires. Similarly, conductors maybe printed directly on the substrate of a glaze. Alternatively,conductors may be formed within a body of a rail or stile or both duringa molding or extrusion process wherein a polymer forms about aconductor.

In some embodiments, electrical connections between a solar cell andportions of an exit conductor are made by positional contactinterference whereby a conductor terminal on one part is secured bypressure against a terminal on another part. For example, a conductorterminal such as a solar terminal at a predetermined location inelectrical communication with a solar cell is formed on a substrate andan opposing conductor terminal at a predetermined location is formed on,placed in, or secured to a surface of a rabbit. Placement of a glazewithin a scaffold assembly causes a two conductors to be in oppositionalcontact with each other and therefore capable of the transfer ofelectrical current from a solar cell to a sash portion of an exitconductor without the use of a mechanical or chemical connection betweenterminals. A glazing bead typically seated within a glazing bead recessin one or more of a rail and stile may be used to secure a glaze withina rabbet typically by applying an amount of pressure against thesubstrate. A glazing seal may be present to reduce seepage of outdoorelements into a rabbet area. In other forms a glaze may be securedwithin one or more of a rail and stile using plastic welding.

In an alternative embodiment, a conductor terminal may be formed onsurfaces other than a substrate or on coatings on the substrate. Forexample, an exit conductor terminal may be formed at a predeterminedlocation on one or more of; a portion of a solar cell itself, on a cellshield, and on other nearby surface having direct electricalcommunication with the solar cell. These locations are preferred whenthe solar cell is situated adjacent the substrate edge. Similarly,positional contact interference may be used as a method of connecting aplurality of solar cells. For example, conductor terminals on conductorsat pre-determined positions on the rabbit are located at positionsopposing terminals in communication with other solar cells placed alongan edge of a substrate. Assembly of a glaze within a glaze cup formed byrabbets and adjunct recesses results in a consequent alignment ofopposing conductor terminals and therefore electrical communicationbetween the solar cells without the need for separate wiring. In mostembodiments both positive and negative conductors will be included.

As discussed previously, in some forms one or more solar cells aresecured to a substrate adjacent and opposing a peripheral edge of asubstrate then assembled within a glaze cup formed by rabbets. In analternative embodiment, one or more solar cell are secured in a rabbetinstead of a substrate using an alternative form of cell fixator. Oncethe solar cells are secured in the rabbet, a glaze is then placed withina glaze cup formed by a rabbets adjacent the pre-positioned solar cells.Cell shields or sealants may still be applied for their originalfunctional purposes as described earlier.

In an alternative embodiment, positional contact interference may beused to conduct electrical current between a sash portion and a windowframe. For example, in a casement window, one or more terminals may beplaced at a predetermined position on a lateral hinge side of one of therails or stiles of a scaffold assembly. One or more terminals are alsoplaced at a predetermined position on an inside window frame directlyopposing the respective terminals on a scaffold assembly. As anincidence of closing a casement window and therein the sash to seatwithin the window frame, the opposed respective conductor terminals areseated against each other closing the circuit and providing for the flowof current between a sash portion and frame portion of an exitconductor. In this form however, the solar circuit is only closed whenthe window is closed.

Positional contact interference may also be used in a sliding window toconduct current from a sash portion to a frame portion. In oneembodiment for example, a sash portion of an exit conductor extends to aone or more contact terminals on a lateral surface of a stile or railthat is in sliding opposition with a jamb (sill, header, or jamb) of awindow frame. The contact terminal on the stile or rail extends at leastpartially along the lateral elongate surface length of the stile orrail. A contact terminal located on an opposing medial surface of anadjacent window sill jamb is positioned to remain in oppositionalcontact with a contact terminal on the stile. A contact terminal on ascaffold and a contact terminal on a frame may be of a variety oflengths extending along the axis of movement between the sash and frame.In preferred embodiments a terminal on the scaffold is longer and mayextend substantially the entire length of a sash. In preferredembodiments, a terminal on a frame is substantially shorter and islocated near the middle of the frame. In this configuration, a sash maybe slid between a fully opened position and a fully closed positionwhile maintaining a closed solar circuit during the full range due toconstant contact between the terminals. This configuration also fullyhides the terminals from exposure from contact that may cause a short ordamage to a component of the electrical system. The opposed terminalsmay be located on any side of a window. If the opposed terminals arepositioned at the bottom of a window, the weight of the window mayimprove interference between the contacts however they may be more aptto exposure from the elements when the window is left open. If theopposed terminals are positioned at the top, the weight of the windowmay reduce interference between the contacts but they will be lessexposed to the outside elements.

Numerous forms of terminals may be used for positional contactinterference. In a one form the contact terminals are fixed. Fixedcontact terminals are exposed conductive materials typically extendingfrom a non-conductive surface and formed without the ability to deflect.Examples of a fixed terminal would be a copper pod printed on a flexiblesheet and a flat protruding boss. Misalignments between a sash and framecan cause fixed terminals to separate causing undesired opening of asolar circuit. In other forms, the terminals are resilient. Resilientcontact terminals comprise a portion that is biased towards an opposingterminal. For example, in one form a resilient terminal is in the formof a resilient metallic strip electrically connected to an exitconductor. The resilient metallic strip creates a spring force againstthe opposing contact terminal regardless of small misalignments betweena sash and frame. In another form of resilient contact terminal, aterminal is biased by a spring in turn causing the terminal to be biasedagainst an opposing terminal. A resilient contact terminal may belocated on a sash side or frame side or both. In one form, a contactterminal may be of a fixed type but may become resilient as a result ofa small change in its shape. For example, a fixed contact terminal maybe formed from a flat metallic strip extending through a sash port (alsotermed a scaffold port). Each end of the strip is bent generally 90degrees at each end of the ports so that its legs lie or are otherwisesecured flat against the surface of the stile or rail in a U-shape. Oneor more of the legs of the same metallic strip may be bent outwards likethe legs of the letter ‘W’. Deflected outwards, this leg now has aresilient ability to create a spring force against the opposing terminalregardless of small misalignments between a sash and frame. Theresilient leg of a terminal may be formed in a variety of shapes such asbubble or arched.

In some embodiments, a sash does not close or slide directly against aframe. A jamb liner may be used as an intermediate separator. In thisconfiguration one of the contact terminals may be disposed on a surfaceof the jamb liner in opposition to an opposing contact terminal. Thejamb liner may be biased towards the sash therein creating an effectiveseal between the sash and the jamb and a smooth sliding interfacetherebetween. The bias also assists (much like a resilient terminal) inkeeping the opposed terminals in contact thereby maintaining a closedsolar circuit as the sash is moved to open and closed positions. A biasmay be created by applying a small force to the sides of the jamb linerwhen coupling to the jamb causing deflection of the liner toward thesash or by other methods such as placing resilient foam behind the jambliner. In alternative embodiments, a jamb liner may be instead securedto a sash or dual opposing liners on a sash and frame may be used. Inpreferred embodiments such as with hung windows, a jamb liner is securedto a vertical jamb of a window frame and preferably manufactured of asmooth flexible polymer. A contact terminal is formed or mounted on asurface of the jamb liner accessible to the opposing terminal on thesash. A jamb liner contact terminal may extend towards a jamb through ajamb liner port or wrap around an edge of the liner before travelingtoward the jamb. In this configuration, an enclosed space between a jamband a jamb liner can serve to protect and insulate an exit conductor asit travels to an exit location through a frame port. A similararrangement using liners between a sash and frame may be used in slidingstyle windows. In some embodiments, a hung window jamb liner includes abalance cavity comprising a line with one end secured to a balancetypically in the form of a weight or spring. The line extends over apulley at the top of the jamb with the opposing end of the line securedto a sash. The balance offsets the weight of the sash thereby making thesash lighter and easier to raise. In some embodiments, portions of anexit conductor travel within the balance cavity. In some embodiments asash and jamb liner intermesh through the formation of a sliding tongueand groove relationship.

In a casement style window, a compact profile of a bridge portion fitswell in the reduced space provided as the sash closes against a framewhereas the elongated profile of a bridge portion accommodates forincreased distance between the sash and frame as the window opens.

In other embodiments a bridge portion conductor is in a resilient formsuch as an extension spring that is pulled into extension by an openingsash and is biased to spring back to a compact position as the sash isclosed. Alternatively, a compression spring is used wherein it is pushedinto a smaller compression profile upon closure and returns to anextended profile when the sash is opened. Similarly a coiled spring maybe used for this same purpose. The springs may be insulated to preventundesired electrical conduction.

In some embodiments one or more of a stile and rail and window frame mayinclude features to guide or house or guide and house a bridge portionof a conductor as it moves between a compact profile and an extended orelongated profile. A bridge recess may be positioned within one or moreof a stile, a rail, a jamb liner, and a frame to house at least aportion of a bridge portion of a conductor as needed during sash closureor movement. Optionally a bridge guide may be used to prevent the bridgeportion from becoming pinched or crushed during closure as the sash of acasement style window snugs into the frame or moves along the frame of asliding window. In some forms a bridge guide may be in the form of apiece of plastic, a coiled spring, or guiding wire. In some embodimentsa bridge portion is entirely hidden between a rail or stile and frame ofthe window when the sash of the window is closed. Alternatively, thebridge portion may be concealed within a coupling chamber. A couplingchamber is an enclosed space formed between a closed casement sash andone or more of a window frame and a jamb liner.

In other embodiments, a portion of the of a bridge portion is visiblewhen a window is closed. For example, an exit conductor may exit ascaffold assembly from an outdoor facing surface of one of the rails orstiles, then extend towards the window frame before reentering thewindow frame at a nearby outdoor facing surface. Similarly, an exitconductor may span across two indoor facing surfaces of a frame andsash. In another example, such as when an exit conductor is in the formof a flexible sheet, a fold portion of the exit conductor may extendbeyond opposing sash and frame faces to prevent stress over the fold ofthe conductor.

A rabbet of one or more of a rail and stile may comprise one or moredrain holes positioned to provide the gravitational release of moisturethat may accumulate in a rabbet. If present, a drain hole is preferablylocated between a rabbet and outside wall of at least a lower rail. Ascaffold port extends between a rabbet and an outside surface of atleast one part of the scaffold. In preferred embodiments the scaffoldport resides in a stile or rail on the hinged side of a casement window.In preferred embodiments of sliding windows, a scaffold port resides inone or more of stiles and rails that slides adjacent the window frame.In this embodiment, the scaffold port is configured in size and shape toprovide for passage of a portion of an exit conductor including any endor intermediate connectors or terminals that must pass through the port.In some embodiments a scaffold port profile reflects the profile of theconductor to be used. For example, a rectangular port may be used forpassage of a thin sheet style conductor. A scaffold port may be taperedat its outlet to reduce binding or stress on the exit conductor. Thescaffold port may be sealed with a sealant if so desired. The sealantwill help reduce movement of the exit conductor, seal out elements fromseeping in, while also providing a cushion to the exit conductor.

In some embodiments, a scaffold terminal is positioned at an exit of ascaffold port joining a bridge portion with a sash portion of an exitconductor using a joiner. An exit of the scaffold port may be enlargedand configured to house and in some cases seat and secure the joiner. Ascaffold port cap is present in some embodiments to cover the scaffoldterminal from vision, outside elements, and inadvertent contact. Similarcaps may be used to cover terminals in other locations. A scaffoldterminal provides for quick disconnect of a exit conductor in the eventthe sash needs to be separated from the window frame in instances suchas repair.

In some embodiments, a bridge portion of an exit conductor may extendthrough one or more of a hinge, window lock, and crank mechanism. Thisconfiguration is predominantly useful for casement style windows havinga hinge or other similar pivot mechanism for opening a sash of thewindow by pivoting it away from it's frame. In one embodiment, a hingecomprises integrated conductors on opposed faces of the hinge capable totransfer electrical current through the hinge from the sash to thewindow frame while the sash is stationary or pivotally moving. In thisconfiguration, conductors on the hinge serve as the bridge portion of anexit conductor. One or more hinge insulators may be present to separatea conductor portion from spilling current to a hinge portion and toprotect any inadvertent shorts across the hinge conductor portion.Likewise, in some embodiments an exit conductor may extend across orthrough one or more of a crank mechanism and window lock in serving as abridge portion of an exit conductor. Common crank mechanisms areillustrated in FIG. 41-42.

A frame of a window typically comprises a head at a top, a sill at abottom, and jambs on opposing sides. A frame port extends between aninside surface of at least one part of the frame and an outside surfaceof the frame. In preferred embodiments a frame port resides in a head,sill, or jamb on a hinged side of a casement window. In preferredembodiments of sliding windows, a frame port resides in one or more of ahead, sill, and jamb opposing the scaffold port. The frame port isconfigured in size and shape to provide for the passage of a portion ofthe exit conductor. This may be the conductor itself or may also includeany end or intermediate connectors or terminals that must pass throughthe port. In some embodiments a frame port profile reflects a profile ofa conductor extending therethrough. For example, a rectangular port maybe used for passage of a thin sheet style conductor or the frame portmay be enlarged to also pass an end connector. A frame port may betapered at its inlet to reduce binding or stress on an exit conductor. Aframe port may be sealed with a sealant if so desired. This will helpreduce movement of an exit conductor, seal out elements from seeping in,while also providing a cushion to the exit conductor.

Each conductor passing port may include a port clamp to limit the pullon conductors. For example, in one embodiment a port clamp may bemounted in a port in which a conductor passes through. A port clamp maybe secured by fasteners such as screws, and adhesives or other means. Insome forms a port clamp includes an internal passage in which aconductor passes and a deflectable clamp portion that squeezes againstthe conductor as it is inserted into the port. In other forms the clampis self-locking wherein one portion of the clamp interlocks with anotherportion of the clamp to tighten on the conductor.

In some embodiments a frame terminal is positioned at an entry of aframe port joining a bridge portion with a frame portion of the exitconductor using a joiner. The entry of a frame port may be enlarged andconfigured to house and in some cases seat and secure a joiner. A frameport cap is present in some embodiments to cover a frame terminal fromvision, outside elements, and inadvertent contact. In alternativeembodiments, a frame terminal is positioned within an outside wall ofthe frame. An extension portion of an exit connector may be connected tothe frame terminal. From here an exit conductor may be directed forconnection to one or more of a home solar system and an inverter.Alternatively, an extension channel may extend from an exit of a frameport along an outside surface of a window frame to house an exitconnector. In some embodiments, an extension channel travels toward anaccess window. At the access window, an exit conductor may provide powerto electronic accessories as will be further explain in upcomingparagraphs.

In a one form, a disclosed solar window assembly may be configured totransfer electrical energy from a solar cell within a solar window to asolar energy system in a building and potentially to a local energygrid. For example, the electrical energy generated may be conductedthrough an exit conductor to a nearby inverter which may be used toreduce the demand for energy consumed from electricity providers or soldto an energy provider.

In other forms, a window assembly comprises one or more features toenable extended capabilities. In one form, a window assembly comprisesaccess to a window's solar cell circuit through terminals located andsecured on or extending from sash or frame surfaces of the windowassembly facing the in-doors. For example a window's solar circuit maybe configured with one or more outlets for one or more of charging andoperating electronic devices such as a cell phone, tablet, and computer.For example, in one form an outlet and circuitry conforms to USB portstandards and in some embodiments other known electrical standards forpowering electronic devices. Incorporating these power outlets intoevery window assembly may not be cost effective or aesthetically desiredbut may be provided as an option to consumers. In alternativeembodiments, a solar window circuitry is configured for access from oneor more of sash and frame surfaces facing in-doors through an accessoryaccess window. The access window may be covered by a removable orretractable cap. If a user choses to utilize the extended features of asolar circuitry, accessory devices may be purchased separately to pluginto the solar window circuitry after removing or retracting the cap (ifso equipped). For example, an accessory device available for purchase(or provided with the window) may include one or more of: a USB port,various charging outlets, a night light, various lighting devices likeflashlights and holiday theme lights, a cell phone, a tablet, an IPadtype device charging outlet which may include an integrated stand forsupporting the device, an electric pencil sharpener, a portable fan, abattery charger, and other portable electronic devices. The accessorydevice may include one or more of retainers such resilient clips andother forms of fasteners which may be used to hold an accessory withinan access window and reliably connected to a solar circuit. In someforms an access window includes complementary retaining features such astabs for holding resilient clips.

In an alternative embodiment, direct access to a window's solar circuitis not directly provided from an indoors position. Absent are exposedsolar circuit conductors, removable caps, and retractable caps oversolar circuitry. Instead, access to an accessory access window requiresthe user to perform a mechanical operation at a pre-determined in-doorlocation in the surface of a sash or frame facing the in-doors. Examplesof mechanical operations include cutting, drilling, or prying a surfaceof the sash or frame facing the in-doors. Below this surface the userexposes solar window circuitry such as the exit conductor and in someembodiments electrical joiners for rapid connection to these circuitsare provided. In some forms, the solar circuitry resides in asub-surface access window formed in a non-visible portion of the windowframe or sash. For example, a sub-surface access window is formed by abored hole in an outer surface of a window frame. Here an access windowis not visible after install, but may be accessed using one of theoperations described above.

In some forms a window crank cover provides an alternative location forintegrating an accessory device. The accessory device is coupled awindow's solar circuit accessible beneath the crank cover. In some formscrank covers are swappable. For example, at the time of purchase of acasement window, the purchaser may designate an ordinary crank cover (noaccessory) or a cover with integrated accessory device such as one ormore of a USB port and other accessories including those listed above.Alternatively, the user may choose alternative crank covers withintegrated accessories after purchase or after window install. In thisembodiment, the solar circuitry is modified to provide electricaljoiners below the cover for electrical coupling between the crank coveraccessory and the solar circuitry. In preferred embodiments the crankcover plugs into joiners in the circuit as a method of rapid connect anddisconnect. In yet another alternative, a window crank cover may includean accessory access window assessable by removable cap, retractable cap,or by a mechanical operation as described previously. Accessory devicesconfigured for mounting within a window crank cover may be supplied byone or more of; with the window and purchased separately.

In alternative forms, a battery cavity may be integrated into one ormore of a scaffold and frame of a window assembly to hold batteries. Inpreferred forms, the batteries are removable from an indoors side of asolar window. Inside a battery cavity are electrical battery receivingterminals and conductors for joining the batteries with the window'ssolar circuit. A battery cavity preferably includes a battery caphelping hide it from view of a user. One or more rechargeable batteriesare seated in the battery cavity and electrically joined to the solarcircuit.

In one form, a window's solar cell provides electrical energy duringdaylight to charge a rechargeable battery through use of a solarcircuit. Electrical energy stored in these batteries can then be used atthe user's discretion. During daytime or darkness the charge in thebattery may be utilized to power or charge any number of accessoriesjoined with a window's solar circuit. In some forms, a rechargeablebattery may be configured for removal and used to power other electronicdevices such as a game controller or TV remote. In other forms, one ormore lights positioned for glowing through a substrate of a sash ispowered by the battery and activated by a photo-resistor at darkness orby user activated switch. The light may extend from one or more of; anoutlet in the sash, a frame, a crank cover of the window illuminatingthrough the substrate, from a spacer and illuminating from between thetwo panes of substrate. In alternative embodiments, lights may beconfigured with a theme displayed through the transparent substrate. Inone holiday theme for example, the light may glow in the shape of acandle or Christmas tree. Other well recognized figures may be availablesuch as one or more; pumpkins, flags, turkeys, crosses, bunnies, Eastereggs, peace signs, and hearts. Figures such as these may be used with asolar window to help celebrate a season or communicate a message withminimal expenditure of energy or the effort of hanging lights andrunning electrical cords. In this embodiment, changing light figures isas simple as unplugging the light figure from the solar circuit outletand replacing with a different light figure. In some embodiments lightsare configured to flash or change colors.

In some embodiments a glaze substrate comprises a low-E coating toreflect heat yet allow light through the substrate. If used,applications of a low-E coating are preferably avoided that woulddiminish light that can be captured by the solar cell and used forgeneration of electrical energy. In preferred forms, coatings areapplied to a substrate on internal facing surfaces where a coating isprotected by a layer of substrate.

In some embodiments one of the panes in a glaze is electrochromatic inwhich materials on a substrate, usually a coating, switches fromgenerally transparent to opaque when an electrical voltage is appliedacross it. This feature provides a solar window assembly the capabilityof darkening upon user demand by one or more of; activating a switch orother control and darkening automatically at dusk and returning totransparent at dawn through the use of a photoresistor. The electricalcurrent required to drive an electrochromatic feature may be suppliedthrough a solar circuit from one or more of; a window's solar cell, froma battery contained in the battery cavity, and from an external batteryjoined to the circuit though an accessory access window as introducedearlier. In a preferred embodiment, voltage is applied to electrodes oneach side of a separator within an electrochromatic layer causinglithium ions to migrate through the separator to the outermost electrodewhere they scatter most incoming light. This causes the substrate toappear opaque. The lithium ions remain in this position until thevoltage is reversed causing them to move back so the substrate appearsgenerally transparent once again. Electrical power is only needed whenchanging from one state to the other and may be drawn from powergenerated by a solar window. In other embodiments the substrate surfaceof a glaze facing the outdoors is coated with a photocatalytic titaniumdioxide coating that causes the substrate to be self-cleaning. Thecoating is hydrophilic. When UV light hits the titanium dioxide coatingof the substrate, electrons are generated turning water molecules fromthe air into hydroxyl radicals causing a chemical reaction. The hydroxylradicals attack and break apart organic material into smaller piecesthat are washed away by rain resulting in a clean window.

The ends of a stile and rail are manufactured in complementing forms soas to form a scaffold assembly about a glaze. Although many other shapesmay be created, typically the scaffold assembly is generally square orrectangular and thus the rails and stiles are assembled substantiallyperpendicular to each other. In one form, a stile and rail ends aremitred at approximately 45 degrees then secured together by polymerwelding techniques. In preferred embodiments the polymer is PVC. Inother forms a stile and rail are assembled using fasteners potentiallywith the assistance of plates. In other forms adhesives are used. In yetother forms specialized cutters are used to create variations ofdifferent tongue and groove assemblies which are then fit together usingone or more of glue, nails, screws, and other fastener. Wood portions ofa window assembly includinga sash and frame may be treated with one ormore of wood stains and sealants. Exposed surfaces of wood may becovered in a clad of aluminum or polymer.

Rabbets and adjunct recesses (if present) in the stiles and rails form aglaze cup within the scaffold assembly for seating a glaze and otherelectronics and conductors located at the periphery of a substrate. Oneor more of a cell fixator, a cell sealant, and a cell shield may beutilized for the reasons previously discussed. During assembly the glazeis fit into the glaze cup carefully routing any portion of the exitconductor to avoid undesired pinching of the conductor and to avoidrouting of the conductor to places where it may cause an improperseating or seal between the glaze and scaffold assembly. In oneembodiment, one or more of a fixed and resilient terminal in electricalcommunication with a solar cell is formed on one or more of a substrate,a solar cell, a cell fixator, a cell shield, and a sealant at apredetermined position. One or more of; an opposing fixed and resilientterminal is formed on a rabbet. Upon assembly, the glaze is placedwithin the glaze cup wherein the opposing terminals are now self-alignedand contact each other. The glaze is secured in position by a glazingbead interlocking with one or more of; astile and rail and otherfixation method such as mechanical locks, plastic welding, or fasteners.

In another embodiment, a method for blocking harmful blue light from acomputer screen is disclosed. A transparent substrate covered with aspecialized light responsive coating is utilized in front of a displayscreen to block blue light emitted through the substrate yet allowingvisible light through. The display screen may be in the form of acomputer monitor or other electronic device comprising a display screen.Unless blocked, the blue light over time can be harmful to a user'svision. The coating is again primarily a composition of organic saltsthat absorb wavelengths of infrared and ultraviolet light that areinvisible to a human eye. In some forms, the organic salts are blends ofcyanine and cyanine salts. Infrared and UV light from a display screenis trapped within the transparent coating and transformed into glowinginfrared light that is guided to the edge of the glass or polymer whereit is collected by solar cell strips adjacent an edge of the substrateto produce an electrical current. The electric current produced by thesolar cell strips may be recycled to help reduce power consumption bythe computer monitor or to drive other accessories connected to it. Byblocking the harmful non-visible light, the coated substratesimultaneously helps protect the user's eyes.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

These and other features and advantages of the present invention willbecome more readily appreciated when considered in connection with thefollowing detailed description and appended drawings, wherein:

FIG. 1 is a perspective indoors view of a preferred embodiment of asolar collecting casement window with sash partially opened;

FIG. 2 is a perspective indoors view of the solar collecting casementwindow of FIG. 1 with sash closed;

FIG. 3 is a perspective view of one embodiment of a glaze for use in asolar window.

FIG. 4 is a partial close-up view of an edge of the glaze illustrated inFIG. 3 further illustrating its construction.

FIG. 5 is an exploded perspective view of one embodiment of a solarglaze having substantially transparent solar cells disposed on a surfaceof a pane.

FIG. 6 is a perspective view of one embodiment of a glaze from use in asolar window further illustrating a solar cell terminal.

FIG. 7 is a partial close up perspective view of the solar cell terminalon a substrate introduced in FIG. 6 and illustrating an electricalconductor connecting it to a solar cell.

FIG. 8 is a partial close up perspective view of the solar cell terminalof FIG. 6 in relation to both panes.

FIG. 9 is a partial close up perspective view of the solar terminal ofFIG. 8 with one pane removed.

FIG. 10 is a rear (outdoor) view of a preferred embodiment of a scaffoldassembly.

FIG. 11 is a cross-sectional view along A-A of the scaffold assembly ofFIG. 10 illustrating the clad portion of a stile.

FIG. 12 is a cross-sectional view along A-A of the scaffold assembly ofFIG. 10 illustrating the wood portion of a stile (includes illustrationof an adjunct recess).

FIG. 13 is a partial rear view of a corner of the scaffold assembly ofFIG. 10 illustrating the joining of a rail and stile.

FIG. 14 is a partial close up perspective view of one embodiment of asash port extending between a bridge wall and a scaffold floor.

FIG. 15 is a partial close up perspective view of one embodiment of asash port plug seated within a sash port for the transfer of currentthrough the sash port.

FIG. 16 is a partial perspective view of one embodiment of a sash portplug with an bridge portion end connector preparing for seating.

FIG. 17 is a partial perspective view from an opposed angle of the sashport plug of FIG. 16 illustrating two types of terminals which may beused.

FIG. 18 is a side view of one embodiment of a sash port plug with bridgeportion end connector and bridge portion of an exit conductor extendingto a frame port plug.

FIG. 19 is a side view of one embodiment of a sash port plug with bridgeportion end connector and bridge portion of an exit conductor extendingthrough a frame port clamp.

FIG. 20 is a cross sectional view along B-B of the solar windowillustrated in FIG. 2.

FIG. 21 is a partial close up cross sectional view along B-B of thesolar window illustrated in FIG. 2 illustrating one embodiment of aflexible bridge portion within a chest cavity with sash closed.

FIG. 22 is a partial close up cross sectional view along B-B of thesolar window illustrated in FIG. 2 illustrating one embodiment of aflexible bridge portion within a ches cavity with sash opened.

FIG. 23 is a full cross sectional view of the embodiment illustrated inFIG. 22.

FIG. 24 is a cross sectional view along C-C of the solar windowillustrated in FIG. 2 illustrating various channels and cavities whichmay be used for solar circuitry.

FIG. 25 is a partial indoor perspective view of a window crank coverwith various integrated electrical ports.

FIG. 26 is a cross sectional view of one form of prior art vinyl windowscaffold and frame illustrating various chambers having open interiors.

FIG. 27 is an indoor perspective view of one embodiment of a solarwindow in a sliding configuration.

FIG. 28 is an indoor perspective view of one embodiment of a solarwindow frame.

FIG. 29 is a partial close up perspective view of one embodiment of acontact terminal arrangement on elongate guide bosses of a window frame.

FIG. 29A is a perspective view of one embodiment of a liner (jamb, sill,head) situated between a frame portion and a sash portion.

FIG. 30 is a top perspective view of the solar window frame of FIG. 28illustrating various guide surfaces and frame port exits.

FIG. 31 is a close up perspective view of one embodiment of a frame portexiting an outside surface of a frame sill of a sliding solar window.

FIG. 32 is a perspective view of one embodiment of a scaffold assemblyof a sliding window used to house a solar collecting glaze.

FIG. 33 is a side perspective view of one embodiment the scaffoldassembly of FIG. 32 illustrating elongate contact terminals and ascaffold port.

FIG. 34 is a close-up view of the elongate contact terminals andscaffold port exit of FIG. 33.

FIG. 35 is a perspective view of the scaffold assembly illustrated inFIG. 32 illustrating location of an entry of a scaffold port.

FIG. 36 is a close up view of the scaffold port entry of FIG. 35.

FIG. 37 is a chart illustrating selected exit conductor travel locationoptions on a solar window.

FIG. 38 is a chart illustrating selected terminal joiner locationoptions on a solar window.

FIG. 39 is an electrical schematic view of one form of a solar circuituseable within a solar window.

FIG. 40 is an electrical schematic view of one form of a solar circuitwith integrated rechargeable battery.

FIG. 41 illustrates one form of a window crank mechanism of the priorart.

FIG. 42 illustrates another form of a window cranking mechanism of theprior art.

DETAILED DESCRIPTION OF SELECTED EMBODIMENTS

Embodiments of the invention will now be described with reference to theFigures, wherein like numerals reflect like elements throughout. Theterminology used in the description presented herein is not intended tobe interpreted in any limited or restrictive way, simply because it isbeing utilized in conjunction with detailed description of certainspecific embodiments of the invention. Furthermore, embodiments of theinvention may include several novel features, no single one of which issolely responsible for its desirable attributes or which is essential topracticing the invention described herein.

In a preferred embodiment, the article of invention is in the form of asolar collecting casement window 50 and is illustrated in FIG. 1 (firstsash 200 opened) and FIG. 2 (first sash 200 closed). The devicecomprises a solar collecting first glaze 204 held within a first sash200. First sash 200 is pivotably connected to a window frame 100 by ahinge and linkage system available in the prior art with examples ofsuch illustrated in FIGS. 41 and 42. In this embodiment, window frame100 and scaffold assembly 202 is manufactured of a wood core 262 with analuminum clad 254 and is manufactured from another materials such asvinyl or fiberglass in alternative embodiments. An operator 104 on acrank mechanism causes linkage such as a crank arm to push first sash200 out or pull it in towards window frame 100 depending on thedirection in which operator 104 is turned.

Solar collecting casement window 50 comprises a first glaze 204 (FIGS.3-5) formed from two a proximal pane 206 and a distal pane 208 of asubstantially transparent substrate such as glass although a polymer maybe substituted. Pane 206, 208 are spaced by a spacer 210 creating aninternal volume 230 therebetween panes 206,208. Proximal pane 206 is apane positioned facing indoors whereas distal pane 208 is positionedfacing outdoors. Internal volume 230 is defined by proximal internalface 224 of proximal pane 222 and distal internal face 226 of distalpane 208.

Formed on the internal face 226 of distal pane 208 are solar cells 216that are substantially transparent and are created using thin layers ofliquid coating on pane 208 to produce ultra-small solar cells in arraygroups 214. In this embodiment, the coating materials are organicpolymers dissolved into liquid form. When applied to pane 208, solarmodules appear with a neutral tint. In this form solar cells 216 andarrays 214 are created on the substrate to form a solar collector. In analternative form, thin-film solar cells are printed using perovskites onglass or similar substrates in a multi-junction architecture. Inalternative embodiments, solar cells are alternatively formed on otherfaces of distal pane 208 and proximal pane 206.

Solar cell 216 in this embodiment includes a first face conductor 291and a second face conductor 292 to provide an electrical conduit to apositive and negative solar cell terminal 220. Solar cell terminals 220(FIGS. 7-9) in this embodiment are in the form of an enlarged metallicpad formed on the distal internal face 226 of distal pane 208. Solarcell terminals 220 may be copper and may wrap around the pane edge 234of distal pane 208 and may even extend to the other side of thesubstrate. Displayed in FIG. 7 is a fixed terminal although in otherforms the terminal may be resilient wherein solar cell terminal 220 mayinclude a biased arm portion that deflects towards an opposing terminalfor completion of a circuit. In other forms, a solar cell terminal mayuse other styles of electrical joiners introduced previously herein tocreate electrical connections.

A spacer 210 is inset from a pane edge 234 defining a sealing channel213 extending around a circumference of spacer 210. Internal faces 224,226 of proximal pane 206 and distal pane 208 and inside face 215 ofspacer 210 defines inner volume 230. Once inner volume 230 is sealed,air in inner volume 230 is preferred to be replaced with Argon. Aprimary sealer 212 substantially fills sealing channel 213. A secondarysealer is used to seal between an internal face of a pane and opposingspacer side wall at secondary sealer app site 232. The sealant works tolimit the leakage of air into the inner volume 230. A portion of spacer210 may comprise a spacer recess 211 to provide additional access tosolar terminals 220 as illustrated in FIG. 9.

Illustrated in FIG. 10, one embodiment of a scaffold assembly 202 isformed of a combination of a first rail 236, a second rail 237, a firststile 238, and a second stile 239. The rails and stiles ends 241 aremitered at 45 degrees but may be trimmed at other angles in otherembodiments. Alternatively the ends may be cut to interlock. The railsand stiles are fit and fixed together at their ends 241 to form apredetermined shape, such as a rectangle (FIG. 10), complementing theshape of a first glaze 204 used within. Rabbets 250 (FIG. 11-12) in eachrail and stile together form a glaze cup 248 in which a first glaze 204is seated.

A cross sectional view of one embodiment of a clad 254 and a wood core262 across ‘A-A’ of a scaffold assembly 202 are illustrated in FIG.11-12. In this embodiment, first rail 236, second rail 237, and firststile 238 and second stile 239 comprise this wood core 262 with outsidecladding 254 of aluminum. A first glaze 204 is held and sealed between afirst sealing edge 246 of glaze bead 240 and a second sealing edge 252of a corresponding stile and rail. A scaffold floor 256 and a scaffoldsubfloor 264 (when present) faces an opposing pane edge 234 of a firstglaze 204. Glaze bead 240 is secured within bead recess 260, 268. Anadjunct recess 270 may be present to house one or more of; a sashportion of an exit conductor 279, edge placed solar cells, solar cellfixators, cell shields, and cell sealants. Clad 254 of FIG. 11 isillustrated with an adjunct recess 270 using construction lines(indicating if present) whereas wood core 262 illustrates an adjunctrecess 270 feature.

A sash port 244 (FIG. 14) extends between scaffold floor 256 (orscaffold subfloor 264) and a bridge wall 242 on a first stile 238. Inthis embodiment, sash port 244 is substantially rectangular but may beconfigured to a variety of shapes such as circular. An electrical joineris used between solar cell terminal 220 and a sash portion of an exitconductor 279 and is here in the form of positional contactinterference. Incidence to placing first glaze 204 in glaze cup 248,solar cell terminals 220 engage opposing positive and negative terminalsin rabbet 250 extending from sash port coupler 274 (FIG. 15-17). Asillustrated in the FIG. 17 embodiment, sash port entry terminals 285 maybe in the form of one or more of fixed terminals 282 and resilientterminals 284.

On an opposing end of sash port coupler 274 is a plug receiver 272 forhousing an end connector of a bridge portion of exit conductor 280 hereillustrated as sash port plug 278. Complementary contacting terminalswithin sash port plug 278 and within sash port plug receiver 272provides for the transfer of electrical current from solar collector 218through bridge portion of the exit conductor 280. The body of sash portcoupler 274 is held in sash port 244 by one or more of the followingtechniques such as fasteners place through fastening holes 276 andadhesives. Sash port plug 278 is removablely held in plug receiver 272by a deflectable arm (not shown) that deflects into a lock recess inplug receiver 272 similar to a RJ-11 phone jack.

In this embodiment (FIG. 20-23), bridge portion of exit conductor 280 isin the form of a flexible sheet with positive and negative conductorlayers on a side of the sheet. As disclosed earlier, a conductor on aflexible sheet may be formed as a printed circuit board. The printedcircuit board may comprise polyimide. An insulator layer prevents directexposure to bridge portion of exit conductor 280. In this embodiment,bridge portion of exit conductor 280 is housed within a chest cavity 122formed between a scaffold assembly 202 and frame 100 of a casement solarwindow 50. In some forms the bridge portion flexible sheet may be biasedinto a predetermined shape capable of alternating between a compactconfiguration when sash is closed and an elongate configuration whensash is open. For example, the flexible sheet may have an accordion likeprofile. Alternatively in a preferred embodiment and as seen in FIG.21-22, flexible sheet of 280 is in the general shape of a semi-circlethat fits within a chest cavity 122. With first sash 200 closed, bridgeportion of exit conductor 280 maintains a compact configuration. Asfirst sash 200 is opened, the semi-circular shape of bridge portion ofexit conductor 280 opens and elongates to an elongate configurationtherein limiting stress imposed on the exit conductor. This is furtherdemonstrated in the sectional views of FIGS. 20 to 23.

Upon exiting chest cavity 122, bridge portion of exit conductor 280continues towards an entry of a first frame port 118. The entry or exitof first frame port 118 may comprise an electrical joiner. For example,a receiver and plug type device (frame port plug 287) similar to sashport plug 278 and plug receiver 272 may be used as a releasableconnection between bridge portion of exit conductor 280 and window frameportion 100. In other forms an exit conductor is not releasable at anentry of first frame port 118. In alternative forms, the exit conductormay be secured in an entry of first frame port 118 for example by one ormore of; a sealant, an adhesive, and a compression grommet 290 asillustrated in FIG. 19. Compression arms on grommet 290 flex against abridge portion of the exit conductor 280 to fix it in place.

In the illustrated embodiment (FIG. 22), a frame portion of the exitconductor 124 extends through frame port 118 and exiting out at alateral face 120 of window frame 100. From here a functional end of exitconductor 172 is routed toward a solar circuitry system of the buildingstructure. In alternative embodiments exit conductor 277 may insteadextend down an outside extension channel 116 in window frame 100 untilreaching an access window 174. At access window 174 (FIG. 2), functionallead of exit conductor 172 may be used to provide power to electronicaccessories. A joiner may be located at one or more of; a frame portexit, at access window 174, or anywhere in therebetween. Joiners may beused for the joining of exit conductor 277 to leads extending from thebuilding's solar system. Interruptions within an exit conductor at sitesof joiners may vary. In one embodiment for example, exit conductor 277may be absent of joiners thereby extending directly from solar cells 216within a first glaze 204 through a functional end of exit conductor 172.In alternative embodiments, exit conductor 277 may include a pluralityof joiners providing the installer multiple sites to connect into asolar window's electrical system.

In alternative embodiments, at least a branch of exit conductor 277travels an interior frame path before one or more of; exiting through aframe port 118, traveling to an access window 174 to provide power, andtraveling to a crank cover 102. For example, exit conductor 277 maytravel in inner extension channel 117 which is typically hidden behindor within removable decorative frame molding at the inside of windowframe 100. The exit conductor 277 may then be routed toward an accesswindow 174 where it can be attached to one or more of; electronicaccessories, integrated batteries in a battery cavity, a window crankcover (FIG. 24-25), and one or more power electrical ports and otheroutlets. Alternatively, exit conductor 277 may travel within a chestcavity 122 of a window. Fasteners and adhesives may be used to securethe exit conduct at predetermined positions within a chest cavity orwithin an inner extension channel 117.

In one embodiment an electric driven motor is housed behind a crankcover 102 to rotate an operator 104 and open and close a first sash 200by pushing corresponding buttons 132 on crank cover 102. Current todrive the motor is supplied from solar collector 218 or from on-boardbatteries stored within a battery cavity of the window or both. In someembodiments, an electric driven motor responds to one or moretemperature and humidity sensors such that solar window 50 willautomatically open when a room reaches a pre-determined in-doortemperature and close when a window senses rain. In some embodiments,the driven motor responds to an indoor-outdoor temperature differentialwherein a window will only be automatically opened when the differentialis advantageous to a user (i.e. outside air temperature is low enough tohelp cool a hot room).

FIG. 27 illustrates yet another embodiment of a transparent solar energyproducing window in the form of a sliding solar window 60. In someforms, embodiments of window 60 are turned 90 degrees and operate as ahung or double hung style window. Various solar glaze constructiontechniques such as those described previously (i.e. FIG. 3-5) may beused for solar sliding style and solar hung windows. For example, agenerally transparent solar collecting first glaze 204 (illustratedpreviously in FIG. 3) may be dimensionally modified and seated withinrabbet 250 b within scaffold assembly 202 b (FIG. 32).

FIG. 28 illustrates an embodiment of a window frame 100 b wherein thisembodiment is manufactured from a header 106 b, a sill 108 b, a firstjamb 110 b, and a second jamb 112 b. This embodiment includes anoptional nailing fin 114 b although like other windows disclosed, windowframe 100 b may be formed of a block frame form or a flush flange.

As illustrated in FIGS. 28 and 30, a third slide boss 144 b and a fourthslide boss 146 b are positioned along an inside portion of header 106 b,and a first slide boss 140 b and a second slide boss 142 b arepositioned along an inside portion of sill 108 b to offer side to sideguided sliding of each sash. For hung windows slide bosses arealternatively positioned vertically along first jamb 110 b and secondjamb 112 b. Each slide boss is shaped to complement correspondingscaffold guide grooves 294 b, 296 b typically using a tongue and groovearrangement. A slide boss extends from rails on a sliding window forhorizontal movement, and from stiles on a hung window for verticalmovement to guide linear movement of each sash for open and closingoperation. Alternatively, in either configuration (hung or sliding), anelongated guide boss may be alternatively formed on a form of slideliner, such as a jamb liner that fits between a jamb and sash. Forhorizontal sliding windows a header liner and sill liner would be used.

At least one frame port is utilized as a passage for an exit conductorto transfer electrical current from one or more of solar collectorsformed on a first glaze 204 b and a second glaze 205 b to a pointoutside window frame 100 b such as to an inverter of a home solarsystem. The position of a frame port preferably is located adjacent ascaffold port, however this is not necessary as an exit conductor maytravel a path along the frame, liners or sash to a different port entrysite. In this embodiment (FIG. 28-29) a frame port is in the form of afirst frame port 118 b and a second frame port 119 b generally centeredsill 108 b. (Alternatively, a liner port may be present to pass the exitconductor in the event a slide liner is used.) In this embodiment, firstframe port 118 b and second frame port 119 b extend down throughcorresponding first primary guide surface 154 b of first slide boss 140b and second primary guide surface 156 b of second slide boss 142 btowards an outer frame surface 170 b of sill 108 b. Alternatively, firstframe port 118 b and second frame port 119 b may extend from surfacesother than primary guide surfaces. For example, the frame port mayextend from a side guide surface 148 b. In some embodiments, conductorsfrom each sash are routed through a single frame port. Here, a firstterminal pair 150 b and a second terminal pair 152 b are electricallycoupled with a lead end of frame portion of an exit conductor 124 b(FIG. 31). First terminal pair 150 b and second terminal pair 152 b area form of electrical joiner. In this embodiment (FIG. 29) terminal pair150 b and 152 b are disposed on a guide surface of a corresponding slideboss. Negative and positive terminal pairs of exit conductor 124 b areseparated for alignment with opposing first elongate contact terminal300 b and second elongate contact terminal 302 b formed on a basesurface 304 b of a scaffold guide guide groove 294 b. One or more of anadhesive and fastener may be used to hold contact terminals and frameterminals and other portions of an exit conductor in position.

FIG. 29A illustrates an example of a liner (jamb, head, sill) for usebetween sliding surfaces of a sash 200 b and a window frame 100 b. Inthis embodiment, liner 180 comprises a first slide boss 140 d and asecond slide boss 142 d for engaging scaffold guide grooves of ascaffold assembly 202 b pair in a sliding or hung window. Formed on eachslide boss is a first frame terminal pair 150 d and a second frameterminal pair 152 d which are functionally equivalent to the terminalpairs illustrated in FIG. 29. The terminal pair may be positioned atvarious locations on a surface of a slide boss or adjacent to it asillustrated by the narrow position of second frame terminal pair 152 dwith respect to the wide position of first terminal pair 150 d. Exitconductors extending from each terminal pair may travel within any offirst liner tunnel 182 d, second liner tunnel 184 d, and third linertunnel 186 d, before decending through first frame port 118 d and secondframe port 119 d to reach an outer frame surface 170 b. Typically linerare made of polymers for reduced friction.

In one embodiment, FIG. 31 illustrates a close up view of a first frameport exit 162 and a second frame port exit 164 through an outer famesurface 170 b of window frame sill 108 b. A frame portion of an exitconductor 124 b extends through a first frame port exit 162 b and asecond frame port exit 164 b and like poles are joined together tocombine the electrical current from each sash (200 b, 201 b). In thisembodiment, the exits 162 b, 164 b of the frame port open in an outerextension channel 116 b on an outer perimeter of window frame 100 b. Inthis embodiment a joiner is included in the form of fastening holes 166b wherein an extension portion of an exit conductor 277 b may be joinedusing fasteners at fastening holes 166 b. Alternatively, an extensionportion of an exit conductor 277 b may be joined using other joinermethods such as plugs, spring clips, soldering and other methodspreviously discussed. In some embodiments, exit conductor 277 b maytravel down outer extension channel 116 b to a final destination such asto connect with a building structures solar energy system. One or moreof; staples, wire fasteners, and adhesives may be used to hold the exitconductor in an extension channel.

Previous descriptions in this application for casement window exitconductor frame routing options extend also to hung and sliding windowsstyles (except where crank covers are concerned). In light of this, exitconductors in hung and sliding style solar windows subject to thisapplication may also be routed to achieve previously described features.For example, an accessory access window extending through a frame 100 bmay be used to provide one or more of; power to USB ports, power tocharge batteries, and charging ports for accessory devices to name afew.

FIG. 32 illustrates one embodiment of a scaffold assembly 202 b for ause in a sliding or hung style solar window 60. A first scaffold guidegroove 294 b and a second scaffold guide groove 296 b extend acrossopposing edges of the scaffold assembly 202 b. A rabbet 250 b is formedin each stile and rail. A glaze cup 248 b is formed in scaffold assembly202 b using a glaze bead 240 and bead recess 260 arrangement asdescribed and illustrated in FIG. 11 capturing first glaze 204 b andsecond glaze 205 b within respective first sash 200 b and second sash201 b (FIG. 27). Other forms of solar collecting glaze may be used suchas a glaze comprising a pane edge positioned solar cell. The pane edgesolar cell collects light directed from a non-visible light sensitivecoating on the pane.

FIG. 33 overs a different view of the scaffold assembly of FIG. 32 whichmay be used for both sliding and hung style windows. Scaffold assembly202 b comprises a first stile 238 b opposed by a second stile 239 b witha first rail 236 b opposed by a second rail 237 b. In some embodimentsthe stiles and rails are individual parts assembled into a scaffoldassembly.

Extending the entire length of first rail 236 b is first scaffold guidegroove 294 b. Scaffold port 298 b is defined by scaffold port face 299 band extends between base surface 304 b and one or more of; scaffoldfloor 256 b and scaffold subfloor 264 b (if present). Extending alongfirst scaffold guide groove 294 b is first elongate contact terminal 300b and second elongate contact terminal 302 b so positioned so as tomaintain sliding contact with first frame terminal pair 150 b oncorresponding guide surfaces of a window frame or liners there between.Electrical contact between an elongate contact terminal and a terminalpair provides for the transfer of energy from a solar collecting sash200 b, 201 b to points within a window frame 100 b.

FIG. 34 illustrates in close up a scaffold port 298 b extending betweena scaffold floor 256 b of a rabbet 250 b and a base surface 304 b insidea first scaffold guide groove 294 b. Formed along base surface 304 b arefirst elongate contact terminal 300 b and second elongate contactterminal 302 b. These terminals 300 b, 302 b extend from first terminalleg 288 b and second terminal leg 289 b of sash portion of exitconductor 279 b which travels through scaffold port 298 b toward rabbet250 b. The elongate contact terminals are positioned for sliding contactengagement with first frame terminal pair 150 b and second terminal pair152 b disposed on primary guide surfaces 154 b, 156 b of first andsecond slide boss 140 b, 142 b. This cooperating arrangement ensures thesolar circuit remains closed despite repositioning of the sash withinthe window frame. First and second frame port 118 b, 119 b may be sealedwith one or more of a plug and a sealant.

FIGS. 35 and 36 illustrate a scaffold assembly 202 b with a close-upview of the entry side of scaffold port 298 b. Here a sash portion ofexit conductor 279 b extends through scaffold port 298 b. Contactterminals extend across scaffold floor 256 b of rabbet 250 b. In thisembodiment, both a first terminal leg 288 and a second terminal leg 289are curved so as to be biased toward opposing solar terminals on a glaze204 b, 205 b. When a glaze 204 b, 205 b is lowered into glaze cup 248 b,the resilient terminals flatten as necessary for fit but also to assurecontinuous contact between the opposing terminal surfaces.

FIG. 37 illustrates some of several paths that an exit conductor maytravel as it makes its way through portions of a solar window assemblytowards a functional destination.

FIG. 38 illustrates some of several possible locations at which terminaljoiners may be located to join various portions of an exit conductor.The chart indicates the placement of a terminal joiner between twoportions of an exit conductor. An exit conductor is typicallyelectrically insulated as it travels its course and includes a positiveand a negative conductor contained within it. Some embodiments areabsent of joiners such as when an exit conductor extends directly from asolar cell, and moves through a sash and frame.

Some windows such as Vinyl windows are made from extruded plastics orfiberglass. Vinyl windows typically comprise several structural wallswith internally open chambers which in some instances are partiallyfilled with insulation. In some embodiments these chambers are used tohouse portions of an exit conductor which may traverse along a length ofa chamber. For example, FIG. 26 illustrates a cross sectional view ofone form of scaffold and frame of a prior art vinyl window. Variousportions of a scaffold assembly 202 c and frame 100 c have openinteriors. For example, a scaffold assembly portion 202 c comprises afirst scaffold chamber 306 c, a second scaffold chamber 307 c, and athird scaffold chamber 305 c. A frame portion 100 c comprises a firstframe chamber 308, a second frame chamber 310, a third frame chamber312, and a fourth frame chamber 314. In a preferred embodiment, scaffoldports 298 c and frame ports 118 c extend into these chambers and provideaccess to them. Once entering a chamber, an exit conductor may travelalong the length of a chamber to another point for exit whilebenefitting from the protection of the chamber and being hidden fromview. Similarly, terminal joiners may be partially housed within thesechambers for joining various portions of the exit conductor. Vinylwindow forms may have many similar features as previously identified.Any one of these features may be included in singular form or pluralform. Examples of common features on a vinyl window include; a frameportion 100 c, a nailing fin 114 c, a scaffold assembly 202 c, a sealinggasket 134 c, a glaze bead 240 c, a glaze 204 c, an operator 104 c, achest cavity 122 c, an outer frame surface 170 c, and a second chestcavity 123 c.

One form of a window's solar circuit is illustrated in FIG. 39. Thiscommon circuit comprises a diode 350 and a rechargeable battery 354.Light energy absorbed by a solar panel is converted to direct electricalcurrent. Conductors carry the current through diode 350 and resistor 352into rechargeable battery 354. Diode 350 prevents electrical currentfrom reversing in the absence of light and moving back to solar cell.Resistor 352 moderates the flow of current from flowing too fast. Aparallel circuit may be used to power accessory devices. For example, asmall motorized fan 356 may be connected and powered from battery 354.As an alternative, motor 356 may be used to operate a crank to open orclose a sash, or operate the raising and lowering of a shade. Switches358, 360 may be integrated in the circuits to charge battery 354 or runmotor 356. In some embodiments the switches may be replaced withphotoresisters. For example, when light is powering a solar cell, aphotoresister closes the circuit so the battery can be charged.

A preferred method for constructing an operable sliding window utilizingsolar collecting glass is now described. Construct a window frame 100 bof a predetermined shape and size comprising a header 106 b, a sill 108b, and a first jamb 110 b and a second jamb 112 b. Construct a solarcollecting first sash 200 and second sash 201 by constructing atransparent solar collecting first glaze 204 b and a second glaze 205 butilizing at least one pane 228 of a generally transparent glass orpolymer substrate comprising a solar collector 218 formed on a face 226of pane 228. Electrically coupling a positive and negative solar cellterminal 220 with said solar collector 218. Construct two scaffoldassemblies 202 b capable of sliding window movement within window frame100 b from a first rail 236 b, a second rail 237 b, a first stile 238 b,and a second stile 239 b wherein each stile and rail comprises a glazecup 248 b for sealing a solar energy producing glaze 204 therein.

Place each transparent solar collecting glaze 204 into a rabbet 250 b ofeach scaffold assembly 202 while electrically coupling said elongatecontact terminals 300 b, 302 b with solar cell terminals 220 on glaze204. Fixing the glaze 204 in rabbet 250 with a glaze bead 240 or similarfixation method.

Form complementing sliding surfaces between window frame 100 b andscaffold assemblies 202 b (a liner material therebetween may besubstituted) by forming a pair of spaced elongated slide bosses (140b-146 b) on an internal surface of a sill 108 b and header 106 b. Spaceslide bosses (140 b-146 b) such that at least one sash (200 b,205 b) canbe slid behind the other. Form an elongated scaffold guide groove (294b-296 b) in opposed external surfaces of each scaffold assembly 202.Form a scaffold port 298 b in one of said rails extending between rabbet250 b, and a base surface 304 defining scaffold guide groove 294 b. Forma pair of elongate contact terminals (300 b, 302 b) (one positive andone negative) for conducting electrical current along substantially theentire length of a base surface 304 b of elongated scaffold guidegrooves 294 b.

Form a first frame port 118 b and a second frame port 119 b extendingbetween an outside frame surface 170 b of a window frame and primaryguide surfaces 154 b, 156 b of window frame. Extend a frame portion ofan exit conductor 124 through each frame port. Form frame terminals 150b, 152 b on a surface of slide boss 140 b, 142 b in sliding contactopposition with elongate contact terminals 300 b, 302 b formed on thesurface of the elongate scaffold guide grooves 294 b, 296 b. Establishelectrical communication between frame terminals 150, 152 b with exitconductor and exit through frame port to one of the following; to itsfinal electrical destination such as an inverter or solar system of ahome, to a joiner located in the outer wall of the frame where it may bejoined with other solar circuits, along an extension channel, or to anaccess window or battery cavity where it can be used to charge batteriesor provide electrical power to accessories.

A preferred method for constructing an operable casement windowutilizing solar collecting glass is now described. Construct a frame ofa predetermined shape and size comprising a header, sill, and a pair ofopposing jambs. Construct a transparent solar collecting glaze utilizingat least one pane of a substrate and comprising an edge mounted orsubstrate surface mounted solar cell. Couple a positive and negativesolar terminal with the solar cell. Construct a scaffold assembly sizedand shaped for fit within the frame and configured for pivot movementaway from the frame from a plurality of rails and stiles. Form on therails and stiles a rabbet and in some embodiments an adjunct recesswherein the rabbets define a glaze cup. Install weather stripping tomaintain a seal between the sash and frame when closed.

Form a scaffold port in one of the rails or stiles (preferably the railor stile that remains closest to the frame when opened) extendingbetween the rabbet or adjunct recess, and an outer surface of thescaffold assembly. The scaffold port is preferably placed to open to achest cavity (if present) between the frame and scaffold.

Secure a scaffold portion of an exit conductor in the scaffold portexposing the lead end of the joiner in the rabbet. Place the transparentsolar collecting glaze in the prepared glazed cup. Electrically couplethe polar solar terminals with the sash lead of the scaffold portion ofan exit conductor using a joiner (this may occur as incidence of theglaze being placed in the glaze cup). Fix the glaze with a glaze bead orother fixation method such as plastic welding.

Choose a location for the frame port on the frame preferably near theexit of the scaffold port. Form a frame port at the chosen locationbetween an outside surface of the window frame and an inside surface ofthe window frame. If joiners or wire clamps or grommets will be used ateither end of the bridge portion, create the required cavities to houseor fasten them in the scaffold or frame. In some forms the joiner may bereleaseable (i.e. a sash port plug) for rapid assembly or separation ofthe sash from the frame. Continue to route the bridge portion of theexit conductor through the chest cavity and into the frame port orconnect utilizing a joiner. Form the bridge portion into a predeterminedshape for housing within the chest cavity to accommodate sash openingand closing.

Extend a frame portion of an exit conductor through the entry of theframe port. Coupled to the frame portion of the exit conductor, formcontact terminals on a surface of a wall defining the elongate guideboss that is in contact opposition with the elongate contact terminalsformed on the surface of the elongate scaffold guide grooves. Extend theexit conductor from the exit of the frame port to one of the following;to its final electrical destination such as an inverter or solar systemof a home, to a joiner located in the outer wall of the frame where itmay be joined with other solar circuits, along an extension channel, orto an access window or battery cavity where it can be used to chargebatteries or provide electrical power to accessories.

Mount hinge hardware to the sash and frame. Mount an operator crankmechanism to the sash and frame for opening and closing the sash.

The foregoing invention has been described in accordance with therelevant legal standards, thus the description is exemplary rather thanlimiting in nature. Variations and modifications to the disclosedembodiment may become apparent to those skilled in the art and fallwithin the scope of the invention.

What is claimed is:
 1. An operational solar collecting windowcomprising: a sash portion; said sash portion comprising a generallytransparent solar collector portion capable of producing an electricalcurrent when exposed to light; said sash portion comprising a scaffoldenclosing said generally transparent solar collector portion; a solarterminal; said solar collector portion electrically coupled to saidsolar terminal; said solar terminal comprising a positive solar terminaland a negative solar terminal; an exit conductor for conductingelectricity from said solar terminal; said exit conductor having a sashlead for electrical coupling with said solar terminal; said exitconductor having a functional lead for electrical coupling with a solarsystem within a building; a scaffold port extending through saidscaffold to provide passage of a conductor through said scaffold; aportion of said exit conductor residing in said scaffold port; a bridgeportion of said exit conductor; a window frame portion for mountingwithin the wall of a building structure; said bridge portiontransferring electrical current through said exit conductor from saidsash portion to said frame portion; said frame portion comprising aframe port for passage of a conductor through said frame; a portion ofsaid exit conductor residing in said frame port; said sash portionoperational by one of: sliding within said window frame and pivotingfrom said window frame.
 2. The operational solar collecting window ofclaim 1 wherein at least a portion of said exit conductor is in the formof a conductor on a flexible sheet.
 3. The exit conductor of claim 2wherein said conductor on a flexible sheet contains polyimide.
 4. Theexit conductor of claim 2 wherein said conductor on a flexible sheet iscurvilinear.
 5. The operational solar collecting window of claim 1wherein said bridge portion of said exit conductor may be uncoupled fromsaid sash portion.
 6. The operational solar collecting window of claim 1wherein at least a portion of said bridge portion of said exit conductorresides within a chest cavity situated between said scaffold of saidsash portion and said frame portion.
 7. The operational solar collectingwindow of claim 1 wherein said frame portion comprises a first jamb andwherein a portion of said functional lead of said exit conductor resideswithin an outer extension channel of said first jamb.
 8. The operationalsolar collecting window of claim 1 wherein a sash portion of said exitconductor resides in one or more of an adjunct recess and a rabbet of ascaffold assembly.
 9. The operational solar collecting window of claim 1wherein said sash portion is double glazed.
 10. An operational solarcollecting window comprising: a sash portion; said sash portioncomprising a generally transparent solar collector portion capable ofproducing an electrical current when exposed to light; said sash portioncomprising a scaffold enclosing the periphery of said generallytransparent solar collector portion; a solar terminal; said solarcollector portion electrically coupled to said solar terminal; saidsolar terminal comprising a positive solar terminal and a negative solarterminal; an exit conductor for conducting electricity from said solarterminal; said exit conductor having a sash lead for electrical couplingwith said solar terminal; said exit conductor having a functional leadat a window frame portion; a scaffold port to provide passage of aconductor through said scaffold; a portion of said exit conductorresiding in said scaffold port; a bridge portion of said exit conductorextending between a sash and a window frame; a window frame portion formounting within the wall of a building structure; said sash portionoperational with respect to said window frame portion; said bridgeportion of said exit conductor transferring electrical current betweensaid sash portion and said frame portion; said frame portion comprisinga frame port for passage of a conductor through said frame; and aportion of said exit conductor residing in said frame port.
 11. Theoperational solar collecting window of claim 10 wherein a linkagemechanism extends between said scaffold of said sash and a frame portionfor opening and closing said sash.
 12. The operational solar collectingwindow of claim 10 wherein said sash portion is operational by pivotingfrom said window frame.
 13. The operational solar collecting window ofclaim 10 wherein said sash portion is operational by sliding within saidwindow frame.
 14. The operational solar collecting window of claim 10wherein at least a portion of said exit conductor is in the form of aconductor on a flexible sheet.
 15. The exit conductor of claim 14wherein said conductor on a flexible sheet contains polyimide.
 16. Theexit conductor of claim 14 wherein said conductor on a flexible sheet iscurvilinear.
 17. The operational solar collecting window of claim 10wherein at least a portion of said bridge portion of said exit conductorresides within a chest cavity situated between said scaffold of saidsash portion and said frame portion.
 18. The operational solarcollecting window of claim 10 wherein said frame portion comprises afirst jamb and wherein a portion of said functional lead portion of saidexit conductor resides within an outer extension channel of said firstjamb.
 19. The operational solar collecting window of claim 10 furthercomprising a terminal pair on a liner of a sill of the window frame andan opposing pair of elongate contact terminals on a scaffold guidegroove.
 20. The operational solar collecting window of claim 19 whereinsaid opposing terminal pair and elongate contact terminals remain incontact when sliding the scaffold during one or more of opening andclosing.